Making all in cmd
cc1: warnings being treated as errors
bt-cmd.c:1: error: 'bt-cmd.gcda' is version '401*', expected version '403*'
make: *** [bt-cmd.o] Error 1
seems, a 'make clean' does not remove the gcda or gcno files ... we have to add extra stuff to the make clean section in Makefile.am to ensure such files are gone after a fresh build cycle